It’s been more than a year since her mother died, but the pain now hurts more than ever.

After her mother was gunned down in a foiled robbery on Jan. 11, 2018, Sheyla Padilla was too shocked and too busy planning a funeral to feel the way she does today.

She misses Celia Luna-Delgado’s jokes and her laugh. The holidays are tough, too, but it’s the little day-to-day things that get to Padilla, 34. It took about eight months for Padilla to stop reaching for the phone to call her mother about something as simple as a recipe. Luna-Delgado isn’t around to plan a quinceanera or to talk about colleges or her grandson’s first crush.

“That’s when I think it hits, and it makes it a little bit tougher than the beginning,” said Padilla, tears carrying makeup down her cheeks. “And not knowing, too.”

Las Vegas police still haven’t solved Luna-Delgado’s killing. On Thursday, Metropolitan Police Department officers, along with Padilla, her family and loved ones, once again made a public plea for help in solving Luna-Delgado’s shooting.

Homicide detectives have chased several leads, but officers have been unable to identify the pair.

Police have examined video surveillance from “countless” places, canvassed the area and even tried to identify suspects through an “electronic footprint,” all to no avail, homicide Lt. Ray Spencer said Thursday. It’s been months since their last lead.

Yet, officers aren’t calling her death a cold case, Spencer said.

“This is a full-blown, active homicide investigation,” no different than any new cases since then, he said.

It’s one of two unsolved slayings of “completely innocent” victims from last year — hers and the death of 17-year-old Raheem Rice, killed outside a house party in June — that continue to haunt Spencer, he said.

“I am confident that one day we will get this solved,” he said.

Metro Capt. Yasenia Yatomi, who oversees the area command where Luna-Delgado was killed, pleaded for someone to come forward with information and shared a pointed message to those responsible for her “senseless” killing.

“You all are cowards, and somebody out there knows who these cowards are,” she said.

Padilla knew she was going to have to bury her mother one day.

But because she died in a shooting, the family second-guesses itself about what could’ve happened differently to prevent it, she said.

Arrests and finding out the “why” of what happened to her mother won’t bring her back or make the hurt less painful, Padilla said. Thirteen months later, and the wound remains open, and it’ll stay that way until someone is behind bars.

“I think it’s the least we deserve,” Padilla said.

Anyone with information on Luna-Delgado’s killing can call Metro homicide detectives at 702-828-3521 or Crime Stoppers at 702-385-5555 to remain anonymous.

Las Vegas Review-Journal man-about-town columnist John Katsilometes gets his head shaved by former Las Vegas Mayor Oscar Goodman during St. Baldrick's Foundation shave-a-thon on the Brooklyn Bridge at New York-New York in Las Vegas Friday, March 8, 2019. (K.M. Cannon/Las Vegas Review-Journal) @KMCannonPhoto

The Blue Angels take flight over Las Vegas Strip

The Blue Angels’ U.S. Navy Flight Demonstration Squadron flew their signature Delta formation over a part of the Las Vegas Strip, McCarran International Airport and east Las Vegas and were scheduled to fly over Hoover Dam. (Michael Quine/Las Vegas Review-Journal) @Vegas88s

Gross World Records

A group of about 20 children gathered around a TV at Sahara West Library on Feb. 27 for a history lesson on the most disgusting world records.

Lt. William Matchko of the Las Vegas Metropolitan Police gives details about a car crashing into a Starbucks at Sahara Avenue and Paradise Road, near the Las Vegas Strip, on Friday, March 1, 2019. (Jessica Terrones/Las Vegas Review-Journal)

Car crashed into PT’s Gold

A 60-year-old man who police believe was impaired drove into a PT’s Gold at Silverado Ranch and Decatur boulevards Thursday night, Metropolitan Police Department Lt. William Matchko said. The driver was hospitalized and is expected to survive. A man inside the bar was hit by debris but drove himself to the hospital, Matchko said. (Katelyn Newberg/ Las Vegas Review-Journal)

Kids from local Las Vegas elementary schools took part, Thursday, in a program at the Animal Foundation, where they read books to dogs. (Mat Luschek/Review-Journal)

Pioneer Trail highlights historic locations in West Las Vegas

The Pioneer Trail, a 16-site route of historically significant locations in Las Vegas, starts at the Springs Preserve and snakes east until it reaches above the brim of downtown. (Bizuayehu Tesfaye/Las Vegas Review-Journal) @bizutefsya

Vegas Warm Weather Hits Las Vegas Valley

Between Feb. 20-21, parts of the Las Vegas Valley were hit with 7.5" of snow. Less than a week later, it was sunny with temperatures in the 70s. (Mat Luschek/Las Vegas Review-Journal)

Dr. S. Jay Hazan, a World War II veteran, talks about his arrest at the VA Hospital

Dr. S. Jay Hazan, a World War II Army veteran, was arrested in November after he caused a ruckus at the VA Hospital in North Las Vegas and stole his driver's car keys. He was arraigned on Tuesday, Feb. 26, 2019, and the charges will be dropped after 60 days. (Bizuayehu Tesfaye/ Las Vegas Review-Journal) @bizutesfaye

Claytee White talks about Black History Month

An interview with Claytee White, director of the Oral History Research Center at UNLV. (Benjamin Hager/Las Vegas Review-Journal)

Reflecting on the Moulin Rouge and a segregated Vegas

Former employees of the Moulin Rouge, the first integrated hotel-casino in Nevada, talk about what it was like in the brief six months the casino was open. (Rachel Aston/Las Vegas Review-Journal)

Las Vegas home prices

Home prices rose in every ZIP code in the Las Vegas Valley in 2018 for the second year in a row, according to SalesTraq. Prices grew fastest in older, more centrally located areas. But prices were highest in the suburbs. The top three ZIP codes for price growth were 89119 (29.8%), 89146 (25%) and 89030 (24.6%). The top three ZIP codes for median sales prices were 89138 ($464,500), 89135 ($420,500) and 89052 ($370,000).

With help from the city of Las Vegas, a Salvation Army shelter stays open during the day Thursday and Friday, offering a safe place for the homeless to find respite from freezing temperatures and snow. (Chase Stevens/Las Vegas Review-Journal)

Sloppy, Slushy Road Conditions Lead to Slow Traffic

Traffic slowed to a crawl on Jones are near Russell as conditions worsened Thursday. (Mat Luschek/Review-Journal)

Winter storm blankets west side of Las Vegas Valley

On Wednesday evening through early Thursday a winter storm dumped more than 7 1/2 inches of snow
on some parts of the Las Vegas Valley. (Michael Quine/Las Vegas Review-Journal)

On March 16, 2019, at approximately 6:00 PM, an armed robbery occurred at a local restaurant located near East Charleston and Eastern. The suspect entered the business with a large knife, demanding money from the registers. (Las Vegas Metropolitan Police Department)

Metro Addresses Ois At Bellagio (Full Press Conference)

Las Vegas Metro police address the officer involved shooting that took place on March 15, 2019, at the Bellagio.

Metro Addresses OIS At Bellagio

Las Vegas police address the officer involved shooting that took place on March 15, 2019, at the Bellagio. (Mat Luschek/Las Vegas Review-Journal)

Parents facing murder charges held without bail

Lakeia Walker and Ricky Beasley, the parents of missing 3-year-old Zaela Walker, appeared briefly in North Las Vegas Court on camera from the Clark County Detention Center as they made their first appearance in court.

Metro briefing on OIS at Bellagio

Metro Capt. Nichole Splinter briefs the media on an officer-involved shooting in front of the Bellagio on Friday, March 15, 2019. (Katelyn Newberg/Las Vegas Review-Journal)

On February 19th, 2019, at approximately 10:23 am, a robbery occurred to a business located on the 3000 block of North Las Vegas Boulevard. The pictured suspect entered the business, approached the counter and pointed a firearm at the victim demanding money. The victim complied and the suspect fled with an undisclosed amount of money. No injuries were reported.

The Drug Enforcement Administration is launching a new effort in Nevada to combat the opioid epidemic.

North Las Vegas Blvd Robbery 1

Las Vegas police are asking for help finding a man suspected of robbing a business at gunpoint on the morning of Feb. 19, 2019 in the northeast valley. (Las Vegas Metropolitan Police Department)

North Las Vegas Blvd Robbery 2

Las Vegas police are asking for help finding a man suspected of robbing a business at gunpoint on the morning of Feb. 19, 2019 in the northeast valley. (Las Vegas Metropolitan Police Department)

North Las Vegas robbery at a business

Robbery of a business in the 1600 block of North Main Street in North Las Vegas. If you know the suspects or have seen them before please contact the North Las Vegas Police Department at 702-633-9111 or Crime Stoppers at 702-385-5555.

Burglary at Made In Argentina restaurant

Pablo Rodriguez, owner of the Made in Argentina restaurant on Valley View Boulevard, describes the scene of the burglary that took place at his business on Sunday morning. (Mat Luschek/Review-Journal)

Nevada Highway Patrol vehicle hit on US 95 in Las Vegas

Nevada Highway Patrol trooper Adam Whitmarsh was on a traffic stop on U.S. Highway 95, north of Ann Road, about 7:45 a.m. Saturday, Feb 16, 2019, when a Honda CRV struck the back of the patrol car, causing the car to crash into the stopped vehicle. (Nevada Highway Patrol)

NYE Homicide suspects (1 of 2)

Las Vegas police are asking for help locating three men suspected in a deadly shooting on New Year’s Eve inside a southwest valley home. (Las Vegas Metropolitan Police Department)

NYE Homicide suspects (2 of 2)

Las Vegas police are asking for help locating three men suspected in a deadly shooting on New Year’s Eve inside a southwest valley home. (Las Vegas Metropolitan Police Department)

Las Vegas police look for masked armed robbery suspect

Las Vegas police are looking for a masked man suspected of an armed robbery Feb. 14 in the west valley. (Las Vegas Metropolitan Police Department)

Lt. Ray Spencer gives an update regarding a homicide investigation that occurred in front of a bus stop near Fremont Street and Casino Center, involving a security officer and another male.

LVMPD Looking For Blue Bucket Bandit - VIDEO

On December 31, 2018 detectives with the LVMPD Northwest Area Command Patrol Investigations Section received a report of the theft of a surveillance camera from the front porch of a residence located in the area of West Lake Mead Boulevard and North Rampart Boulevard. The victim in this case became aware of other residents in the neighborhood who had been the victim of similar crimes.